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Updated: Jun 30, 2025
Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Growth, crystal structure and IR luminescence of KSrY1-xErx(BO3)2
Artem B Kuznetsov1, Konstantin A Kokh1, Liudmila A Gorelova2
1Sobolev Institute of Geology and Mineralogy SB RAS, ak. Kaptug, 3, Novosibirsk, 630090, Russian Federation.
Abstract:
A series of novel KSrY1-xErx(BO3)2 (x = 0-1) phosphors that emit near-infrared radiation was synthesized using solid-state methods. Pure Y and Er crystals were grown using a KF flux via the top-seeded solution growth technique. In situ high-temperature single crystal X-ray diffraction, Raman spectroscopy and DFT calculations were used for characterization. Within the series, a polymorphic phase transition from space group P21/m to R3m was discovered between 550 and 600°C. The concentration dependence of the luminescence intensity was measured for the samples. A strong emission of Er3+ electron transition 4I13/2 → 4I15/2 was detected within the 1529-1549 nm range, with the maximum observed for the KSrY0.4Er0.6(BO3)2 composition.
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